*{
  margin:0;
  padding:0;
}
ul li{
  list-style: none;
}
a{
  text-decoration: none;
  color: #444;
}
body{
   font-family: "微软雅黑",Arial, Helvetica, sans-serif;
   font-size: 14px;
   background-color:#f5f5f5;
}